This event features missions to collect certain items and/or defeat a certain number of enemies. Once you clear a mission, you can tap on it to receive a reward. Completing missions may unlock new main quest areas. Missions count retroactively, even if you have not accepted the mission. i.e. If you kill 50 skeletons, then receive the 60-skeleton mission, your progress will immediately be 50/60 on it.

In the mission screen, the button toggles between All Missions, Completed Missions with Pending Rewards, Missions in progress, Locked missions, and Missions with Rewards Already Claimed.

These are the objectives needed in order to obtain every copy of Ryougi Shiki (Assassin) and Sharp Knife. As long as you are naturally progressing through the event and unlocking rooms, you should already be on track to obtaining all copies; in other words, there are no real shortcuts to only getting Ryougi Shiki and Sharp Knives without completing other event objectives.

Event Craft Essences

Event Shop, Boosts Enemy Spawn Rate

These CEs increase appearance rate of certain enemy types. The effect is capped at 100%; going over 100% will not cause more enemies to appear. If you have enough copies to limit-break one of these CEs to maximum, it is not recommended to do so unless you have too many copies, or cannot fit them in your lineup, since they give only 50% spawn bonus at maximum limit break. All of them are available from the Event Shop and a maximum of five of each CE can be purchased, with the exception of Summer's Precognition, which has a limit of 4 but which is also given out as a Mission Completion reward fairly early on.